The heart is enclosed in a membrane called________?

✅ A. Nephrostome

Option A: Nephrostome Option B: Nephridiopore Option C: Both of these Option D: None of these Correct Answer : Nephrostome Read more

✅ A. Diatioms

Option A: Diatioms Option B: Heliozoans Option C: Radiolarians Option D: Foraminiferans Correct Answer : Diatioms Read more

✅ B. Eustachian tube

Option A: Gills Option B: Eustachian tube Option C: Middle ear Option D: Lungs Correct Answer : Eustachian tube Read more

✅ A. Arteries

Option A: Arteries Option B: Veins Option C: Capillaries Option D: None of these Correct Answer : Arteries Read more

✅ D. Synthesis of conjugated molecules

Option A: Nerve impulse conduction Option B: Transport of material Option C: Mechanical support Option D: Synthesis of conjugated molecules Correct Answer : Synthesis of conjugated molecules Read more

✅ B. CO2

Option A: O2 Option B: CO2 Option C: H2O Option D: light energy Correct Answer : CO2 Read more

✅ A. Cartilaginous fishes

Option A: Cartilaginous fishes Option B: Bony fishes Option C: Running fishes Option D: Jawless fishes Correct Answer : Cartilaginous fishes Read more

✅ D. Accumulated data > Hypothesis > Observation & experimentation > New data > Conclusion

Option A: Hypothesis >Accumulated data > observation & experimentation > conclusion Option B: New data > Conclusion > Accumulated data > Observation & experimentation Option C: Accumulated data > New data Observation & experimentation Hypothesis > Conclusion Option D: Accumulated data > Hypothesis > Observation & experimentation > New data > Conclusion Correct Answer : Accumulated data > Hypothesis >… Read more